The largest U.S. health insurers collected some $650 billion in premiums in 2009, the latest year for which data were available in early 2011. The top 25, ranked below by market share, accounted for nearly two-thirds of the total. Data were provided by the National Association of Insurance Commissioners, whose members direct the state agencies that license insurance companies.
| Rank | Insurer |
|---|---|
#1
| Unitedhealth Group |
#2
| Wellpoint Inc. Group |
#3
| Kaiser Foundation Group |
#4
| Aetna Group |
#5
| Humana Group |
#6
| HCSC Group |
#7
| Coventry Corp. Group |
#8
| Highmark Group |
#9
| Independence Blue Cross Group |
#10
| Blue Shield of CA Group |
#11
| Cigna Health Group |
#12
| BCBS of MI Group |
#13
| Health Net of California, Inc. |
#14
| BCBS of NJ Group |
#15
| BCBS of FL Group |
#16
| Regence Group |
#17
| BCBS of MA Group |
#18
| Carefirst Inc. Group |
#19
| Wellcare Group |
#20
| HIP Ins. Group |
#21
| Metropolitan Group |
#22
| Unumprovident Corp. Group |
#23
| Universal Amer Fin Corp. Group |
#24
| Lifetime Healthcare Group |
#25
| BCBS of NC Group |
